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Two black DDR5 UDIMM modules, 64GB kit, no heat spreader

OWC

OWC 64GB (2x32GB) DDR5 4800 ECC Unbuffered UDIMM desktop RAM

SKU CH-PYR8-MA4WN

64 GB dual-channel DDR5 kit with ECC, CL40 latency and 1.1 V operation for workstations and servers

  • Capacity64GB (2 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 64GB (2 x 32GB)

  • 64 GB total capacity from two 32 GB modules for larger workloads
  • DDR5 4800 speed rated at PC5-38400 for high data throughput
  • CL40 CAS latency at 1.1 V for efficient operation
  • ECC unbuffered design detects and corrects single-bit errors
  • 288-pin UDIMM form factor fits compatible workstations, servers and NAS systems

Kit Composition

This OWC kit supplies 64GB of desktop memory as two 32GB modules. It uses DDR5 technology at 4800 MT/s with a CL40 latency and runs at 1.1V. The modules are ECC unbuffered UDIMMs built to JEDEC and RoHS standards for workstations, servers and NAS systems.

Suitability

The kit suits users who need error-correcting memory for data-critical workloads on platforms that accept DDR5 ECC unbuffered UDIMMs. It is not intended for systems that require registered or load-reduced DIMMs, nor for consumer boards that lack ECC support in the BIOS.

Deciding Specification

ECC unbuffered operation is the single specification that determines compatibility. Only motherboards and CPUs that explicitly support ECC on unbuffered DDR5 UDIMMs will enable the error-correction feature; otherwise the modules will either run without ECC or fail to post.

Points forts

  • 64 GB total capacity from two 32 GB modules for larger workloads
  • DDR5 4800 speed rated at PC5-38400 for high data throughput
  • CL40 CAS latency at 1.1 V for efficient operation
  • ECC unbuffered design detects and corrects single-bit errors
  • 288-pin UDIMM form factor fits compatible workstations, servers and NAS systems

Caractéristiques

BrandOWC
Part Number4E8D52R8064P
Capacity64GB (2 x 32GB)
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

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Questions sur cet article

Should I choose the 64GB dual-channel kit or look for single 32GB modules?

The kit provides two matched 32GB modules for 64GB total, enabling dual-channel operation on compatible platforms. Buying singles risks timing mismatches.

What does the 4800MHz CL40 rating deliver in a real workstation?

It runs at JEDEC-standard 4800MHz with 40-cycle latency at 1.1V, giving stable ECC throughput for multi-tasking workloads without overclocking.

How does the 288-pin ECC unbuffered DDR5 interface limit performance?

The 288-pin DDR5 form factor caps speed at the rated 4800MHz PC5-38400 bandwidth; ECC unbuffered operation adds error correction without registered latency.

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